金魚腦波學

電腦圖學

1.期中考:Open GL必備10函式

2.複習:移動、旋轉、縮放

3.主題:T-R-T旋轉(改變旋轉軸)

4.主題:glut

Transformation.exe自轉VS公轉

自轉:glTranslatef(); glRotatef();

公轉:glRotatef(); glTranslatef();

TRT轉動

#include <GL/glut.h>
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
    glTranslatef(0,0.5,0);
    glutSolidTeapot(0.3);
    glPopMatrix();
    glPushMatrix();
    glPopMatrix();
    ///glutSolidSphere(0.3,30,30);
    glPopMatrix();
    glPushMatrix();
    glTranslatef(0.5,0.625,0);
    glRotatef(angle,0,0,1);
    glTranslatef(0.6,0,0);
    glRotatef(-90,0,1,0);
    glutSolidCone(0.2,0.6,30,30);
    glPopMatrix();
    glPushMatrix();
    glTranslatef(-90,0.1,0);
    glutSolidCone(0.2,0.6,30,30);
    glPopMatrix();
    glutSwapBuffers();
}
void motion(int x,int y)
{
    angle=x;
    display();
}
int main(int argc,char**argv)
{

    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("week10");
    glutDisplayFunc(display);
    glutMotionFunc(motion);
    glutMainLoop();

}